Loudspeaker



FIG. 1 is a perspective view of the loudspeaker taken from the front, right side and above;

FIG. 2 is a front elevational view of the loudspeaker;

FIG. 3 is a rear elevational view of the loudspeaker;

FIG. 4 is a top plan view of the loudspeaker;

FIG. 5 is a bottom plan view of the loudspeaker; and,

FIG. 6 is a right side elevational view of the loudspeaker, the opposite side being the mirror image of that shown.

The portions shown in broken lines in FIG. 5 form no part of the claimed design. 

The ornamental design for a loudspeaker, as shown and described. 